The World Health Organization reports a suspected outbreak of Marburg disease in northern Tanzania with 9 total cases and 8 confirmed deaths. The high-fatality virus, related to Ebola, has raised concerns for further spread due to increased cross-border movement in the region. WHO anticipates more cases as surveillance escalates and confirmed testing is conducted. Currently, there are no vaccines or treatments available for the virus, which has a fatality rate of up to 88%.